The blue-black sky was diluted with white clouds of smoke, the smell of which reached your nose. You don’t remember any of your neighbors or friends smoking, so you decide to find out what kind of smoke it is. Going down the stairs to the floor below, you will find a man with a fancy pipe with a thin thread of smoke coming from the mouthpiece.

I apologize if I caused you any inconvenience.

Exhaling white clouds, the owner of this pipe says, without taking his eyes off the night blue.